At God knows when to God knows what; whose smile's not wrung, see you; unforeseen times ratheras skiesBetweenpie mountainslights a lovely mile.

This sonnet is good advice for the self tormentor (Greek heautontimorumenos), but it's a bit difficult to parse in spots.

The first editor, Robert Bridges, suggested that we mentally supply world as the noun which the adjectives comfortless (6) and dark (7) modify, and on betweenpie (14) he remarked: "a strange word, in which pie apparently makes a compound verb with between, meaning 'as the sky seen between dark mountains is brightly dappled', the grammar such as intervariegates would make. This word might have delighted William Barnes, if the verb 'to pie' existed. It seems not to exist, and to be forbidden by homophonic absurdities."

For the first half of the compound Jackself (9), definition 36 of OED, s.v. Jack, n.1, seems appropriate: "Prefixed to another noun denoting a person, a thing personified, a trade, or a quality, so as to form a quasi-proper name or nickname, often applied familiarly or contemptuously."